Machine fob sawietg stuff cibcular



i ,i t

En sra'rns PATENT orrrca.

THOS. KENDERDINE, J R., OF I-IORSAM TOVN SHIP, MONTGOMERY COUNTY,PENNSYLVANIA.

MACHINE FOR SAWING STUFF CIRCULAR.

Specification of Letters Patent No. 1,719, dated August 12, 1840.

To all whom it may concern:

Be itknown that I, THOMAS KENDERDINE, Jr., of Horsam township, in thecounty of Montgomery and State of Pennsylvania, have invented anImprovement in Machines for Sawing Stuff of Various Kinds into Oil-clesor Segments of Circles of dierent Degrees of Curvature; and I d0 herebydeclare t-hat the following is a full and exact description thereof.

I construct a frame saw of such width as shall adapt it to the length ofthe saw which it is to carry; this frame may consist of two side pieces,into which two cross pieces may be framed, the saw being strained at oneend of the side pieces, by means of screws, or otherwise. The saw frame,when in use, is made to traverse back and forth upon a guide rod,consisting of a straight and smooth, round bar of metal, which is madeto pass through holes in the side pieces of the frame, or through holesin sliding pieces thereon, which sliding` pieces are capable of being soadjusted as that the distance of the saw from the guide rodvshall beequal to the radius of the circle to which the stuff is to be cut. Thestuff to be sawed, is to be held in front of the saw by means of a clampof any suitable construction, furnished with set screws, or other meansof fastening the stuff. This clamp is to be placed on a sliding`carriage, allowing itto be made to approach, or to recede from the saw.The saw frame, also, is placed upon a sliding carriage, admitting of theadjustment of its distance from the stuff. A saw of this description maybe moved by hand, in the manner of the ordinary frame, or turning saw;or it may be worked by the application of any suitable power. Inv allcases, the guide rod will serve to direct the saw in the proper curve,and will cause it to cut perfectly square and true.

' The accompanying drawing is a representation of my machine inperspective.

A, A, is the basis of the machine, which constitutes a railway upon thesides, or string pieces, of which, the frame that supports the saw andits frame is made to slide, as is also the clamp by means of which thestuff to be sawed is to be held.

B, B, are two cheeks framed into the string pieces A, A, and united attop by the cap-piece C.

D, D, is the bottom piece of the sliding carriage, or clamp, that holdsthe stuff to be sawed.

E, is a piece of timber framed into this bottom piece, and risingvertically to such height as may be necessary to adapt it to the lengthof the plank, or other stuff, that 1s to be received between the bottompiece D, I), and the adjustable top piece F, between which and thebed ofthe carriage the stuff is to be confined. The top piece F, is of suchwidth as just to slide freely between t-he cheeks B, B, which serve tosteady it; and the top piece F, has a mortisev in it through whichpasses the piece G, that forms a part of the piece E; the wedge H,serving to confine the piece F, at any required height. y

I, I, are set screws passing through F, and serving to confine the stuffto be sawed. Screws passing' through the cheek B, as at J', may also bemade to bear against one side of the stuff, and press it against bearingpieces K, K, attached to E, and F. It will be manifest that otherdevices of an analogous character may be adapted for holding the stuff.The sliding clamp is to be held in place by screw bolts, or other wellknown devices.

L, L, is the saw frame, resting upon its sliding carriage M` M. The sawframe has a round guide rod N, N, passing through holes in its sidepieces L Il; or, rather, through adjustable slide pieces O, attached tosaid side pieces, by means of which the saw may be adjusted to therequired radius. The guide rod is supported by the vertical pieces M,which may be furnished with holes at diiferent heights, or may beconstructed with adjustable slides, if preferred. The cheek pieces M, M,of the saw carriage are furnished with screw nuts passing through slots,or mortises, in the saw carriage, by which to attach the carriage to thepieces A, A, in any required situation.

I have above stated that the saw framev thus connected and arranged, maybe worked by hand; a shacklebar actuated by a pitman, may be connectedwith one of its side pieces, or a reciprocating motion may becommunicated to it in any of the known ways of eecting this object.

Although I have described the manner in which the respective parts of mymachine may be constructed, I do`not intend thereby to limit myself inthis particular, as I do diferent curves, substantially in the Vman 10not rest my claim to invention on the mode ner herein set forth. r i ofconfining the stu to'be sztwed, or on the In testimony Whereoil Ihereuntoset my forni of the apparatus as represented; but hand thetwenty-second day of June, inthe 5 What I do claim, und desire to Secureto yea-r 1840.

myself by Letters Patent, is- 'Y THOMAS KNDERDINE, JR. The use of theguide rod N, N, passing 'Vitnesses: through the sides of the saw frame,which is THOS. 1). JONES,

to be made adjustable so as to adapt it to GEO WTEST,

